Before the grand Sith-storm:
Jedi order sweeps galaxy for Force-sensitives, who mostly end up not reproducing.
It drives the whole “light side (except-there’s-only-Force) / Dark Side” tug-o-war.
The nu-Sith edgelords actually worth a damn tend to be their students turned to “heresy”.
The last (but not least: remember those “voices screaming in unison”? It reflects in the Force!) problem: the greatest organization of Force users is a bunch of arrogant, self-righteous mind controlling assassins… which probably affected the common attitudes toward them and Force users in general. The second greatest group of visible Force users are mostly ranting bloodthirsty lunatics. The likes of Revan don’t pop up in every other generation, after all.
After Anakin’s misadventures:
The Jedi order is destroyed. The surviving Jedi are those who managed to blend in, they remember and can teach techniques, but cannot possibly see the traditional Jedi hubris as desirable or even sane.
Most “Sith” emo-butchers are destroyed as well.
The most famous and respected Force user (and also Anakin’s descendant) now (after facing both “certain point of view” and Palpatine) without a good reason won’t trust followers of either tradition any farther than he can throw one.
So… is there a reason to think Anakin did not fulfill his supposed destiny of “restoring balance of the Force” mostly right (if not perfectly)?